Use this 'Book: Cam Jansen and the Snowy Day Mystery (upper elem)' printable worksheet in the classroom or at home. Your students will love this 'Book: Cam Jansen and the Snowy Day Mystery (upper elem)'. Word search, word unscramble, crossword puzzle, cloze exercise and short answer comprehension questions to review David Adler's story of missing computers on a snowy day.